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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 8 |
| 4 | 64 |
| 5 | 1331 |
| 6 | 64000 |
| 7 | 6400075 |
| 8 | 1404928000 |
| 9 | 677298787768 |
| 10 | 712186032947200 |
| 11 | 1635557819719974912 |
| 12 | 8209592592625295700893 |
| 13 | 90036881979773511965369428 |
| 14 | 2157454308508779392217680572439 |
[1,1,8,64,1331,64000,6400075,1404928000, 677298787768,712186032947200,1635557819719974912, 8209592592625295700893,90036881979773511965369428, 2157454308508779392217680572439] |